/* 清除页面边距 */
/* 初始化页面 */
* {
    margin: 0;
    padding: 0;
    font-weight: 400;
    outline: none;
    list-style: none;
}

body {
    font: 12px"微软雅黑", "Arial Narrow", HELVETICA;
    background: #fff;
    -webkit-text-size-adjust: 100%;
}
a {
    color: #000;
    text-decoration: none;
}


/* 下载页导航 */
header{
    width: 100%;
    height: 503px;
    /* background: orange; */
    position: relative;
}
.nav{
    width: 100%;
    height: 80px;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    top: 0px;
    left: 0px;
}

.nav-img{
    width:100%;
    height: 503px;
    margin: 0 auto;
    /* background: paleturquoise; */
    background-image: url(../imgs/banner.jpg);
    background-repeat: no-repeat;
    background-position: 50%;  
    box-shadow: 5px 5px 10px rgba(0, 0, 0, 0.5);
}

.nav-big{
    width: 1200px;
    height: 80px;
    /* background: palegreen; */
    margin: 0 auto
}
.nav-big-1{
    width: 1000px; 
    height: 80px; 
    /* background: blueviolet; */
    margin: 0 auto;
    line-height: 80px;
}
.nav-big-1 ul li a {
    color: #fff;
}
.nav-big-1 div{
    float: left;
    height: 50px;
    margin-top: 15px;
    /* border: 1px solid red; */

}
.nav-big ul li{
    float: left;
    font-size: 20px;
    color: white;
    text-align: center;
    width: 110px;
    height: 80px;
    cursor: pointer;
}

/* 主体内容 */
article{
   width: 1200px;
   margin: 0 auto;
}
/*  1 在电脑上听 */
.contents-1{
    width: 1000px;
    height: 540px;
    margin: 0 auto;
}
.contents1-top{
    /* border: 1px solid red; */
    width: 1000px;
    height: 540px;
    margin-top: 30px;
}
.contents1-top-1{
    width: 1000px;
    height: 480px;
}
.contents1-top-1 li{
    float: left;
    width: 328px;
    border: 1px solid #e9e9e9;
    height: 480px;
    margin-left: 2px;
}
.contents1-top-1 li p{
    margin-top: 20px;
}
.XiaZai{
    width: 330px;
    height: 150px;
    /* background: skyblue; */
    overflow: hidden;
}
.XiaZai div{
    width: 150px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    margin-top: 100px;
    margin-left: 90px;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
}
.XiaZai span{
    font-size: 18px;
    color: white;
}
.XiaZai-Linux{
    width: 150px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    margin: 12px auto;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
}
.XiaZai-Linux span{
    font-size: 18px;
    color: white;
}

/* 2 在手机上听 */
.contents-2{
    width: 1000px;
    height: 782px;
    margin: 0 auto;
    /* background: chartreuse; */
}
.contents2-top{
    /* border: 1px solid red; */
    width: 1000px;
    height: 800px;
    margin-top: 30px;
}
.contents2-top-2{
    width: 1000px;
    height: 755px;
    /* background:springgreen ; */
    float: left;
}
.contents2-top-2 li{
    float: left;
    width: 328px;
    border: 1px solid #e9e9e9;
    height: 755px;
    margin-left: 2px;
}
.contents2-top-2 li p{
    margin-top: 20px;
    width: 310px;
    word-wrap: break-word;
    word-break: break-all;
}
.XiaZai-iphone{
    width: 150px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    margin: 63px auto;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
}
.XiaZai-iphone span{
    font-size: 18px;
    color: white;
}
.XiaZai-android{
    width: 150px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    margin: 15px auto;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
}
.XiaZai-android span{
    font-size: 18px;
    color: white;
}

/* 3 在平板上听 */
.contents-3{
    width: 1000px;
    height: 260px;
    margin: 0px auto;
    /* background: chartreuse; */
    overflow: hidden;
    
}
h2{
    width: 1000px;
    height: 50px;
    /* background: chocolate; */
    line-height: 50px;
    font-size: 24px;
    margin-top:20px ;
}
.contents-3-1{
    width: 498px;
    height: 180px;
    border: 1px solid #e9e9e9;
    float: left;
    border-right: none;
}
.contents-3-xiazai{
    width: 110px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    text-align: center;
    line-height: 40px;
    color: white;
    float: left;
    margin-top: 70px;
    margin-left: 30px;
    cursor: pointer;
}
.contents-3-2{
    width: 498px;
    height: 180px;
    border: 1px solid #e9e9e9;
    float: left;
}
/* 在电视上听 */
.contents-4{
    width: 1000px;
    height: 300px;
    margin: 0px auto;
    /* background: chartreuse; */
    
}
.contents-4-1{
    width: 500px;
    height: 250px;
    border: 1px solid #e9e9e9;
    float: left;
}
.contents-4-xiazai{
    width: 110px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    text-align: center;
    line-height: 40px;
    color: white;
    float: left;
    margin-top: 110px;
    margin-left: 30px;
    cursor: pointer;
}
/* 精品应用推荐 */
.contents-5{
    width: 1000px;
    height: 280px;
    margin: 0px auto;
    /* background: chartreuse; */
}
.contents-5 div{
    width: 496px;
    height: 100px;
    border: 1px solid #e9e9e9;
    float: left;
}
.contents-5 div li{
    /* border: 1px solid rgb(49, 195, 124); */
    font-size: 17px;
    float: left;
    margin-top: 35px;
    cursor: pointer;
}
.contents-5 div li:nth-child(3){
    width: 110px;
    height: 40px;
    border-radius: 25px;
    background: rgb(49, 195, 124);
    text-align: center;
    line-height: 40px;
    color: white;
    float: left;
    margin-top: 25px;
    margin-left: 142px;
    font-family: 微软雅黑;
}
footer{
    width: 1200px;
    height: 100px;
    /* background: rgb(49, 195, 124); */
    margin: 0 auto;
    /* border: 1px solid rgb(49, 195, 124); */
}
footer div p{
    color: #BFB0B6;
    text-align: center;
    padding-top: 10px;
}
img:hover{
    box-shadow: 3px 3px 10px gray;
    cursor: pointer;
    transition: all linear .19s;
}
a img:hover{
    box-shadow:none;
}
.xuanzhuan img{
    position: fixed;
    bottom: 100px;
    left: 50px;
    animation: zhuan linear 4s infinite;
}
.xuanzhuan img:hover{
    box-shadow:none;
}
@keyframes zhuan{
    0%{ transform:rotate(0deg) scale(1); }
    50%{ transform: rotate(360deg) scale(3); }
    100%{ transform: rotate(0deg) scale(1); }
}
ul>li>div>img {
    transition: all linear 1s;
}